<template>
  <el-row class="tac">
    <el-col class="cms-logo">
      <span class="cms-logo-img"><img :src="cmsLogo" /></span>
      <span class="cms-logo-text">后台管理系统</span>
    </el-col>
    <el-col>
      <el-menu
        default-active="2"
        class="el-menu-vertical-demo"
        @open="handleOpen"
        @close="handleClose"
        background-color="#545c64"
        text-color="#fff"
        active-text-color="#ffd04b"
      >
        <el-submenu index="1">
          <template slot="title">
            <i class="el-icon-location"></i>
            <span>导航一</span>
          </template>
          <el-menu-item-group>
            <template slot="title">分组一</template>
            <el-menu-item index="1-1">选项1</el-menu-item>
            <el-menu-item index="1-2">选项2</el-menu-item>
          </el-menu-item-group>
          <el-menu-item-group title="分组2">
            <el-menu-item index="1-3">选项3</el-menu-item>
          </el-menu-item-group>
          <el-submenu index="1-4">
            <template slot="title">选项4</template>
            <el-menu-item index="1-4-1">选项1</el-menu-item>
          </el-submenu>
        </el-submenu>
        <el-menu-item index="2">
          <i class="el-icon-menu"></i>
          <span slot="title">导航二</span>
        </el-menu-item>
        <el-menu-item index="3" disabled>
          <i class="el-icon-document"></i>
          <span slot="title">导航三</span>
        </el-menu-item>
        <el-menu-item index="4">
          <i class="el-icon-setting"></i>
          <span slot="title">导航四</span>
        </el-menu-item>
      </el-menu>
    </el-col>
  </el-row>
</template>

<script>
import cmsLogo from '../../../assets/cms-logo.png'
export default {
  name: "NavAside",
  data() {
    return {
      cmsLogo
    }
  },
  methods: {
    handleOpen(key, keyPath) {
      console.log(key, keyPath);
    },
    handleClose(key, keyPath) {
      console.log(key, keyPath);
    },
  },
};
</script>

<style>
.el-menu {
  border-right-color: rgb(84, 92, 100);
}
.el-submenu .el-menu-item {
  min-width: 13%;
}
.tac {
  width: 13%;
  height: calc(100vh);
  background-color: rgb(84, 92, 100);
}
.cms-logo-img {
  display: block;
  width: 30%;
  margin: 5px auto;
}
.cms-logo-img img {
  width: 100%;
  border-radius: 50%;
}
.cms-logo {
  height: 100px;
  border-bottom: 1px solid rgb(255, 208, 75);
}
.cms-logo-text {
  width: 100%;
  color: #fff;
  text-align: center;
  font-size: 14px;
  display: block;
  letter-spacing: 5px;
}
</style>